Huge problem...Please help!!!

I was trying to setup a folders to be shared yesterday and I messed up with setting the permissions. I created a new account to login with, with a password. I command clicked and went to get info of the folders I wanted to share, then I went to the sharing and permissions settings on the bottom. This is where I made my mistake I think. I highlighted the user name I was currently on and selected write only drop box, and set everyone to no access, leaving the system and admin alone. I did this for 4 of the folders I wanted to share. One being all of my music, my movies, my projects, and my documents folder.

I then tried to transfer some files to the computer with my laptop and it locked up saying I couldn't do that. I restarted my computer to only find out that it sits on the apple logo screen with the little loading circle, and never goes away. I tried booting in safe mode, but it won't load up. I can't lose this information, it's extremely important, I was trying to share it with the rest of my network so multiple people can work at the same time. I tried putting the Leopard install cd and repair the permissions but it didn't seem to find any problems. How do I fix this problem????

I was trying to setup a folders to be shared yesterday and I messed up with setting the permissions. I created a new account to login with, with a password. I command clicked and went to get info of the folders I wanted to share, then I went to the sharing and permissions settings on the bottom. This is where I made my mistake I think.

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I then tried to transfer some files to the computer with my laptop and it locked up saying I couldn't do that. I restarted my computer to only find out that it sits on the apple logo screen with the little loading circle, and never goes away. I tried booting in safe mode, but it won't load up.

It seems your nickname is upon you. Well, OK losing data is no joke. And I cannot believe that changing the permissions on some random folders of some user could lead to a system unable to boot. I think that your problem is elsewhere but I cannot say where exactly (defective HD probably). In the meantime, and in order to avoid data loss, you should apply what rob05au said.

It seems your nickname is upon you. Well, OK losing data is no joke. And I cannot believe that changing the permissions on some random folders of some user could lead to a system unable to boot. I think that your problem is elsewhere but I cannot say where exactly (defective HD probably). In the meantime, and in order to avoid data loss, you should apply what rob05au said.

Well I connected two computers with a firewire cable and changed the permissions back to what they were supposed to be, restarted the comp, and it booted up again. I think I need to read up more on network sharing and out of network sharing before I attempt this again.